Update hubtools for fixed verify function

Some refactoring in a dependent lpc55 crate accidentally dropped a check
against the root key table hash on the RoT. This resulted in
`archive.verify` incorrectly passing in places like wicketd and selecting
incorrect RoT images for installation.

Author: labbott

Cargo.lock

@@ -496,7 +496,7 @@ http-body-util = "0.1.3"
 http-range = "0.1.5"
 httpmock = "0.8.0-alpha.1"
 httptest = "0.16.3"
-hubtools = { git = "https://github.com/oxidecomputer/hubtools.git", branch = "main" }
+hubtools = { git = "https://github.com/oxidecomputer/hubtools.git", rev = "2b1ef9b38d75563ea800baa3b17327eec17b1b7a" }
 humantime = "2.2.0"
 hyper = "1.6.0"
 hyper-util = "0.1.16"